{"product_id":"manley-chevrolet-big-block-exhaust-valve-kit-1-900in-head-dia-5-422in-o-a-length-0-3415in-stem-4","title":"Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O\/A Length, 0.3415in Stem","description":"Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46288320200853,"sku":"MAN12745-8","price":514.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0571\/1839\/2469\/files\/1ecc177028ebb28898eba0253019ba05L_2cacd377-f122-492d-9ef7-e6abb1270b9e.jpg?v=1754527541","url":"https:\/\/blowbyracing.com\/products\/manley-chevrolet-big-block-exhaust-valve-kit-1-900in-head-dia-5-422in-o-a-length-0-3415in-stem-4","provider":"Blow-By Racing","version":"1.0","type":"link"}